Perforating-machine



D. NOBLE.

PERFORATING MACHINE. fwPLlcATloN FILED -'MAY 6. |918.

Patented my 3,1921.

B SHEETS-SHEET 2.

D. NOBLE PERFORATING MACHINE.

APPLICATION man MAYe,191.

' Patented May 3,1921.

8 SHEETS-SHEET 33 JUN D. NOBLE.

PERFORATING MACHINE. APPLlcATloN FILED MAY e. 191s.

1,376,897. Patented May 3,1m.

8 SHEETS-SHEET 4y BY TNESE v W uw ATTORNEY D. NGBLE. PERFORAUNG MACHINE. l APPLICATION FILED MAY 6, 1918.

1,376,897, Patente@ May 3,1921. s SHEETS-SHEET 5.

4 iNvi-:NTOR 5000/6/ /i/O/e ATTORNEY MN M r I v w mw /N/ LA7; \bn LA.

y 3, 1921. -SHEET 6 8 SHEETS Patented Ma D. NOBLE.

PERFORATING MACHINE. APPLICATION FILED MM5, 191s.

INVENTOR 00/10/6/ /VO/e www I ATTORNEY D, NOBLE. PERFoRATlNG MACHINE.

APPLICATION FILED MAY By 1918. Patented May 3 s SHEETS-SHEET s /22 IN VENwR 0000/0 /VO b/e ATTORNEY UNITED ST rrr oriaf DONALD NOBLE, OF BRIDGrEPOR'E,` CONNECTICUT, 'ASSIGNOR lTC) THE SINGER kMANU'- FACTURING COMPANY, OF ELZABETH, NEW JERSEY, A CORPORATONO'E kNlllT JERSEY.

Yriinronerime-iiiiiciriiiu.

Patented May 19121.

Application filedV May 6, 1918. Y Serial No. 232,744.r

To all whom t may concern: y

Be it known that l, DONALD Noemi, a subject of the King of Great Britain, residing at Bridge ort, in the county of Fairfield and State of onnecticut, have invented certain new and useful Improvements in Perforating-Machines, of'which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to perforating machines and more specifically to lthat type of machine employed in the manufacture of shoes for producing the lines of ornamental perforations commonly formed along' the edges of the pieces of leather or other material composing the shoe upper. The present machine is of that type which employs a single punch or cluster of punches acting by a succession of rapid blows to produce .the row of perforations and is thus to be distinguished from that form of perforating machine in which a large number cf punches or clusters of punches is employed and which forms the entire series of perforations as a single operation. While the -machine as herein disclosed is particularly adapted for performing the operation above described it will be understood that the machine isrnot to be limited to such use and that many of the novel features of the machine disclosed are capable of use in machines of other types and of widely different character. j

The invention consists in the provisionof a punch operating mechanism comprising a punch-lifting and apunch-depressing cam',

vthe latter having a part adapted to slightly 'relieve the punch immediately after theV punching blow, the punch being actuated from the cams through a pair of relatively adjustable cam followers,

By the employment of the punch-operating devices described, the punch is positively moved in both directions and through a constant and invariable distance, the adjustable connection between the two cam followers providing for taking up of backlash due to wear, thus insuring a uniform cutting action 'of the punch regardless ofthe speed at which it is driven, thereby avoiding many of the defects inherentto machines in use at the present time.

The invention further consists -in novel means for supporting the punch and for reciprocating the same inthe direction of the line of perforations being formed, the punch being moved while still engaged rwith the work thereby serving to feed the same to position for thek next perforating operation. Provision is alsomade for varying the feeding stroke of the punch, the punch, however, 'in

its rearward or feeding movement always*v stopping at the samepoint regardless of the length of stroke. The punchfurthermore is so guided that its axis is at all times perpendicular to the work, insuring a perfect and clean cutting operation. I' .A

In machines of this type in Vwhich hollow punches of very small diameter are employed, diiiiculty has-been experienced by reason of the jamming ofthe punchings or chips in thepuncli shank o r holder therefor. As the chips, during the moment of cutting are compressed to a considerable degree, it follows by reason of the spongy or elastic character of the material that the chips when relieved of the cuttingpressure will expand and in sov doing tend to clog` or jam anyreceptacle into which they mayv pass, especially if the latter be narrow or of restricted 'caf pacity. Such jamming yof the chips within the hollow punch frequently results in`bursting the punch, necessitating replacement of the same, causing delay to the operator and increasing the cost ofv upkeep of themachine.-

The present invention thereforel further consists in the provision of means for agitating the punchingscr chips as `theypass up into the hollow punch carrier to prevent jamming of the same therein, such means comprising the employment of a tubular punch carrier and a hollow piston-like chip agitator slidable therein with means for causing the punch carrier to slide relatively to the chip agitator during the final portion of the punching stroke, thereby enlarging the chip receiving space just at the moment of punching, and at the same time causing a thorough agitation of the chips already thereim-a flexible conduit leading from the receiver to convey away the chips as they accumulate therein.

The invention consists further in the provision of a bed punch or anvil for supporting the work against theblow of the punch, such l the supporting "frame sometimes occurring stances, of a presser-toot ot ordiner arms extending upon opposite sides oi! the path of i'eed movement of the punch, out

when running at high speed and upon hard material.

The machine as herein disclosed is of that type in which a strip of lieXible material such as paper is interposed between the bed plate and the Work to insure the passage of the punch through Vthe full thickness of the work `to produce a clean cut, and at the same time to avoid duiling of the cutting tool. rlhe present invention therefore further comprises the provision of means for supporting a supply of paper in the 'form et a roll, for guiding the same over the bed plate, for positively feeding the same independently of the punch mechanism and for reivinding the strip as fast as used.

As it is desirable to vary the speed oi' travel of the strip over the bed plate at times', as When employing different styles of punch, Jfor example, variable speed drive `for the paper feed is provided. ln order that the paper strip may be reversed so that the opposite edges thereof may be utilized, the supporting means tor the supply and used portions ofthe paper are madeto be readily interchangeable and that both the middle and edge portions of the strip maybe employed, the bed plate is made interchangeable, plates being` provided having strip guiding means located either centrally or at one side thereof.

rlhe invention `further comprises a resilicntly actuated presser root adapted to hold the vvorlr against the work support during the punching operation, but which is positively liited to release the Work during feed- Wvhile the` present invention conte plates the ernploymeiitiy under some circumy type a herein O opposed presser foot oi novel construction provided, said presser foot had' contacting with the Work only adjacent the l rearward limit et movement oiv the punch,

the contact element thereof being of suon. form as to permit ready turning or the inaterial 1n its own plane about said element 1 as a center.

of driving bands or belt-s moving at diilerent speeds being adapted tor engagement With the respective xed pulleys, finger and knee operated devices lbeing provided for simultaneously shifting said belts. Y

ln the mounting and supporting o the driving pulleys, a novel and desirable lubricating arrangement has been incorporated.

The invention further consists inthe provision of driving and stop mechanism comprising a clutch and stop device of the general form shovvn in patent to Gornely, 852,598, May 7, 1907. ln the present disclosure such clutch device has been modiiied in various particulars among which is the provision of a resiliently supported stop bolt serving' to prevent breakage of parts under certain conditions of starting.

The invention consists further inthe pro-v vision of a stop motion device operable either at the Will of the operator as by means of a treadle, or which may be placed under control of a feeler restinglupon the vvorlr and adapted to stop the machine when the vline of perforations has reached la predetermined distance rom the edge thereof, such feeler .being in the form of an attachment readily fixable in operative position.

4The invention further comprises a stop motion which when under control of the operator may operate to stop the machine ai'ter each successive operation or which may stop the machine only when positively actuated by the operator.

The invention further consists in the provision or" locking means for the drive mechanism whereby any accidental movement ci the operative parts may be prevented, as for example when it is desired to change or 'adjust the punches, thus avoiding' possible breakage or'` the machine or injury to the operator. Y Other and further desirabiefeatures of the machine together with-improved details oi construction and improved combinations of parts will be vhereinafter more fully described and claimed, reference being had to the accompanying` drawings `tor a Complete disclosure oit the .same and in` which,-

Fig. 2 is an elevation from the rear of the machine, y Fig. 3 is an end elevation from the left Y hand side of F l, parts beine; broken away to illustrate details of the interior construction, v Y I Fig. t is an end elevation from the right of F ig. 1, l y

Fig. 5 is a vertical cross-section to enlarged scale, on the line. ALT-A of Fig. l showing details of the punch 'operating mechanism,

Fig. 6 is averticalcross-section on the line B-B of Fig. 1,

r Fig. '7 is a horizontal Vsection taken through the axis' of therdrive shaft and illustrating details offthe punch-driving'and stopping mechanisms,

Fig. 8 is a vertical section throuG'h'the t) Ci punch car-rior and associated parts illustrating structural details,

Y Fig. p9 is a vertical section throughthe punch carrier taken at right angles to Fig.

Fig.V 13 is la front elevationV of one of said Fig. 15 is a front elevation, to an envlarged scale, of the upper, right'hand end of the machine showing the arrangement of v the drive pulleys,

parts shown in 15,

Fig. A17 is a detail viewof the drive pulley'structure showing the parts `in disassembled relation, V-

Fig. 18 is a detail view from the Aleft hand end of the machine, parts being broken away,l illustrating the path of travel'of the paper strip Vemployed in the machine-- for receiving the blows of the punch,

Figs. 19, 2O and 21 are `detail views illustrating the mode of construction of the .reel for supporting the paper strip,-

Fig.'22 is a* plan view partly in section, of a modified forni of belt-shiftingcontroller sometimes employed,

Fig. 23 is a detail view in front-elevation and to large scale, illustrating portions of the stop motion mechanism, unrelated parts being broken away,

Fig. 24 is a detail sectional view of a safety device employed,

Fig. 25 is a sectional detail view of the drive clutch and related parts,

Fig.l 26 is an elevation, partly in section,

showing details' of the punch-operating cams,

.1 Fig. 27 is a detail elevation of the presser foot operating cam land cooperating-parts,

23 is asideelevation of a foot treadle Vsuitable for use with the machine,

Fig. 29 is a detail of a preferred form of presser foot, showing the 'same in several positions, 7

Fig. 30 is a side elevation, partly in section, of certain parts shown in Figs. 23 and 25,.;

overhanging, arm 3. While as herein shown the base member, post jandvarm are integral,

it is within the scope ofthe inventiontoA form these as separate members attaching the same together in any suitable manner.

rlhe base member, post and arm arefpro-A vided with a series of cavities 4, 5, 6 andj7,

wherein the'gre'ater portion of the operatf` ing mechanism ofthe machine is inclosed, the cavities 4 and 5 being provided with removable cover plates 8', 9 and`10 which-may be secured in place by anyfsuitable means.

The cover plate 8 is provided, as shown 'at 11, with a depending bracket'member serving as a support for'certain portions of the mechanism tobe hereinafter described. 12 is the main yshaft of the machine, saidv shaft being Vprovided with suitable devices for.

,imparting the desired motion tothe various Y operative elements of the" machine, and Fig. 16 is a vertical sectional view through which will be hereinafter described. At thev upper portion' of the postQ, Mld

boss having a journal opening 18 forming a bearing' for a drive shaft 19.` The outer end of the boss 16 is formed of reduced diameter, as shown at 20, for a purpose to'4 be described. 21 is a drive pulley Vprovided with a hand wheel V14 of usual form,- said pulley having'projectiiig from one face thereof a hub member V23, arranged tobe mounted upon shaft 19.

and a third pulley 26 is also mounted'on the hub 23 and adjacent the outer face of As herein shown, y 16) a pulley 24 ismounted upon the hub 23 adiacentthe lface of the pulley 21,

thevpulley 24, pulleys 21, 2 4 and 26 being" provided with belt grooves 22, 25 and 27, respectively. 28 'isa cott'er pin adapted' to be driven through suitable alined openings in pulley 26,' hub 23 and shaft 19 whereby to seeurev the several parts in proper posii tion.` From this construction, it will be seen that pulleys' 21 and' :26 are fixed upon shaft 19, while the intermediate pulley v24 is-free toturn Von the hub 23.

.Inthe face of the pulley '21 opposite/tok` that from which hub 23 Vprojects is formed an. opening or "chamber y29,1the diameter of which increasesinwardly from the outer face 30 of the pulley, said chamber serving for the reception' of the reduced extremity'j 20 of boss V16. Extendingv from' the inner wall of said chamber 29 is a'channel or passage 31 leading to the opposite Iface ofthe pulley and to the bearing surface-of the'hub 23 upon which turns the pulley 24. 32 isan oil hole formed through the upper portion of thel post 2 and the boss 16, and serving tol i will follow along said boss until it reaches the end of the same, whereupon the rotation.

of shaft 19 tends to cause said lubricant. to move outwardly under centrifugal action and into contact with the interior surface of chamber 29. As such chamber is of increasing diameter inwardly, centrifugal action preventssuch lubricant from traveling toward the face of the pulley, but urges it to move along the passage 31 into contact with the bearing of pulley 24whereby such pulley is constantly and thoroughly-lubricated.

On the inner extremity ofthe drive shaft kr19 (see Fig. 25), and withinthe cavity 5y of post 2 is fixed a collar 33, said collar be-Y ing provided withl a pair of diametrically opposed openings 34. The right hand extremity `of shaft 12, which is in alinement with drive shaft 19, reaches to a point closely yadjacent the inner extremity of the latter shaft and has fixed thereon an eccentric 35 provided with an eccentric strap 36 and connecting rod 37, the purpose of which will be hereinafter described. -The shaft 12 Vhas also fixed thereon, and closely adjacent the eccentric 35, a collar 38, which collar may be integral with eccentric 35, said collar and eccentric being provided with alined openings located at the same radial distance rfrom the axis of shaft 12 as are the openings 34. Mounted upon the shaft 12 and adjacent the "collar v38 is a camv sleeve 40I Lfreely slidable upon the shaft and provided with a pin 39 slidably guided within the openings in collar 38 and eccentric 35, and adapted to engage with either of openings 34 of collar 33, said pin thus serving as a clutch element whereby the drive shaft 19 ymay be connected to the shaft 12 for driving engagement therewith. Surrounding the shaft 12 is a spring 41, one end of which engages with the sleeve 40, the other being l1n engagement with a collar 42 fixed upon the shaft, said spring tending constantly to project the pin 39 into operative driving engagement with the opening 34.

The drive mechanism per se is not claimed in this application, being subject matter of applicants divisional application Ser.

No. 276,608, filed February 12, 1919.

Punch operai/ng mechanism.

Projecting from the rear face of the overhanging arm 3 at the left hand end thereof, as seen in Fig. 1, are a pair of brackets 42, said brackets serving to support a stub shaft 43 fixed in suitable openings therein, and arranged with its axis parallel to the axis of shaft 12. Mounted to turn freely upon said stub shaft is a lever device comprising an arm 44 and a secondary arm 45, these arms being provided, respectively, with lugs 46, 47 (see Fig. 5) arranged in overlapping relation.v Passing freely through the lug 47 is a bolt 48 screw threaded for engagement with athreaded opening in the other lug, and interposed between said lugs is a stiff spring 49 tending'to separa'te said lugs. By adjustment of the bolt 48 the angular relation of the 'arms 44 and 45 may be changed. I

Fixed upon the shaft 12 and in the planes of the respective-arms 44 and 45 is a pairV of cams `50 and 51, said cams being adapted to engage a pair of rolls 52, 53 carried by the respective arms 45 and 44. As yherein shown, the cams 50 and 51 are formed integrally with asleeve 54, the latter being fixed to the y'shaft in any suitable manner. As will be noted from inspection of Fig. 26,

the high or active portions 55 and 56 of said cams are located upon the same side of shaft 12, but by reason of the fact that the rolls 52 and 53 are located upon diametrically opposite sides of the shaft 12, the rotation of said cams will cause an alternate rising and falling motion to be imparted to the lever member 44, the movement of the arm 45 being transmitted to the arm 44 through the bolt 48. While it is within the scope of the present inventionto form the Aarms 44 and as anl integral member, if desired, it has been found preferable to form these members as separate elements with means for adjusting the same relatively to one another,

whereby tovtake up backlash due to wear of the cam faces and the rolls engaging` the same. Y

The employment of a pair of independent, complemental, open or `non-positive Y cams such as 50, 5l, is regarded as particularly advantageous in facilitating manufacture, the cutting-of a positive cam groove being a Vslow and comparatively difficult process. Moreover, by the use of such complemental open cams Vwith relatively adjustable cam followersit ispossible at all times to overcome backlash with its accompanylng noise and vibration, a matter very diicult to accomplish when a positive cam is employed, wherein wear of the cam or its follower immediately results in objectionable noise and inaccuracy in operation.

The lever 44 is bifurcated at its forward extremity to form a pair of opposed arms 57 between which-is located the roll 53, said rollibeing, pivoted torturn upon a pin 58, passing through suitable alined openings Ain the arms 57, the ends of the pin 58. projecting beyond the outer faces ot the arms 57 and having pivotally mounted thereon the upper extremities of a pair of links 59V and 60, said links being retained upon the ends oi' said pin 58 by any suitable means. Fixed in the upper and lower walls respectively of the chamber 4f of arm 3 are opposed pins 6l, 62'providing pivotal bearings tor a swinging bracket 68 having a horizontal arm 64 serving as a supporting means for the punch carrier. Thearm 64: is provided* with upper and lower alined bearing members Y65, 66, in which is mounted for vertical sliding movement the tubular punch carrier 67.

Punch carrier zml chip agitator.

As will be seen from `inspection or" Fig. 8 the punch carrier 67 comprises an upper portion of cylindrical tubular form of relatively small diameter and a lower tubular portion 68 of greater diameter, the interior ot which forms a receiver 95for the punch-V ings or chips 95a cutV by the punch.A vThe enlarged-lower portion ot said punch carrier is provided at 69 with a pair of opposed bearingbosses, of which only one is shown, said bearing bosses being pivotally support-Y ed iii the lower ends of links 59, 60. Screws 70, 71, having enlarged heads, are engaged with threaded openings in thebcsses 69 and serve to hold the links 59, 6() in proper position thereupon. The lower extremity of the punch carrier isV open as at 72, and serves for the reception of a sleeve 73 forming a portion of a punch holder 74C, said punch holder as herein shown serving to support a plate 75, havingtherein a plurality of hollow punches 76, the exact construction of these latter parts, however, be ing or no importance so Jfar as the present invention is concerned.

The punch carrier is split at its'lower extremity at'the rear portion thereof, and is provided with a pair of outstanding` ears 77 throughwhich is passed a bolt or screw 78, by means orp which said ears may be drawn together, thus serving to clamp the sleeve 7 3 ofthe punch holder within the extremity of the punch carrier. 79 indicates an opening or passage-way leading from the'iiiterior of the lower portion 68 of the punchcarrier, such passage-way serving to permit the discharge of chips cut by the hollow punches and which pass up into said lower extremity of the punch carrier. Als herein shown the punch carrier is provided at 8O with anoutwardly extending nipple to which may be connected, as shown at 81, a flexible con-` rier.

ductor Jfor leadingV chips away, from the machineand to'any suitable receiver.

As in machines asheretofore constructed,

and in which hollow punches were employed, a great deal of Aannoyance has been caused by reason of the jamming or clogging, within the cavity of the punch carrier, of chips punches. n, The chip agitator is formed .with a portion 8.4L of reducedY diameter, the main body of said chip agitator 82 being of substantially the internalk diameter of the lower portion 68 of the carrier, while the 'reducedV portion 84 thereoflits within and slidably engages the sleeve 7 3 of the punch holder 7 4.

The chip agitator is .provided-in its sidewall with a. chip discharge opening 85, this ropeningv being adapted to register with the openl ing 79 in the carrier 68'. lnorder that the opening 85 in the chip agitator may properly register withl theopening79, a,r pair of opposed slots 86 are provided upon diametrically opposite sides of said chipy agitator,

said slots beingadapted for engagement by the extremities of the screws70, 71, which; project inwardly beyond the walls' oic the carrier 68y for this purpose, thereby preventing any turn-ing movement of the chip agitator. Y

In employing punch holders provided witha cluster of punches, it is desirable that such punch clusters, when placed in'position,

shall be arranged'symmetrically oi the` line. of the feed of workand some diiiculty has been experienced'in properly centering the same when introducing `,the lpunch, holder` into the lower extremityof the punch car# centering of the punch holder when placing the same inoperative position with relation to the carrier, the sleeve 78 ot the punch holder has ybeen provided as herein-shown with a centrally ldisposed V shaped notchA 87.- ln the upper edge ot the chip agitator.

82 is provided a corresponding V shapedl lug 88, projecting downwardly from the shoulder formed at the junction of the part 8440i reduced diameter with the main por-A tion of said chip agitator,'such lug beingl located in a plane central of saidl c hip vagitator and' passing through the line oifeed.

punch carrier, and to turn the same, untilvvv As a means for facilitating the properv iis " creased, chip agitator 82 sliding upwardly said lug 88 registers with the notch 87,

slight distance above the upper extremity of Y the same, the carrier being provided at the point 90 with alguide bushing having an opening for guiding the upper end ot said rod 89. Between the bushing 90 and the Y head 830i the chip agitator is a spring 91 'the rod 89 is a washer 92 which overlaps the surrounding the rod 89, said spring, by bearing at its opposite extremities upon said bushing' 90 and the head 88, tending to cause 'the chip agitator 82 to move downwardly within the chamber in the lower extremity of the punch carrier, and to hold the same with the lug 88 closely seated in the notch 87. Surrounding the upper extremity of edges of the upper extremity of the tubular carrier 67, said washer being retained in place upon the end oi' rodr89 by means oi' a nut 93 which may be locked in adjusted position as by means of a pin 9K1-, or other suitable device. As will be noted, the washer 92 is of a greater diameter than the carrier 67, and projects beyond the side walls of the same, thus overlapping the guide opening in the bearing member 65. i

Consideration of the above mechanism will show that upon downward movement of the punch carrier 67, the chip agitator 82, being held down bythe spring 91, will move downwardly with the punch carrier until the washer 92 strikes the upper surface of the bearing member 65. Upon Jfurther downward movement of the punch carrier, the rod 91 will be restrained from movement and the chip agitator 82 willthereby be prevented from further movement with the punch carrier, thus causing the lug 88 to separate, to a certain extent, from the notch 87. In the normal position oit the parts with Ythe lug 88 engaging closely in the notch 87, the capacity of chamber or receptacle 95 in the lower portion 68 ot the carrier and into which the chips are discharged frcm the hollow punches is at a minimum, but it will be noted that upon separation of the lug 88",?rom the notch in the downward travel of the punch carrier in the manner above indicated, the capacity of` this chip-receiving chamber will be inrelatively to the inner surface of carrier 68. As the punch descends to perform the punching operation, the chip agitator 82, as

above Vindicated remains in close contact with the sleeve portion 73 during the iirst portion of the movement but at the instant of punching and at which time the chips previously Ycontained within the hollow-punches are being discharged into the chip-receiving chamber of the punch carrier, such chamber or receptacle is enlarged by the separationv of the head of the chip agitator and the punch holder, as above described,thus insuring additional space for theentrance' of the new chips. i

ln the usual forms of punch carrier there is a tendency, due to the expansion of the chips, to cause. a jamming against the side walls of the receptacle which prevents entrance of further chips, and under 4such circumstances the punch tubes are frequently broken ln the present arrangement, as the receptacle is enlarged at the entrance of the new chip, the new chip has time to expandA and adapt itself to the space within the receptacle before the capacity of the receptacle is again decreased upon the rising movement of the punch. Moreover, the reciprocatory movement of the sleeve portion 84 of the chip agitator 82 within the sleeve of, the punch holder 74 serves to constantly agita-te the chips already within the receptacle and tends to cause a rfree discharge of the same through the openings 85 and 79 into the discharge tube 81, thus preventing any clogging or amming of the chips within the receptacle in the punch carrier, and avoiding the difliculties commonly experienced in previous constructions.

rlhe operative movement of the' punch, as will be clear from the previously described mechanism, is produced by engage-` ment of the rolls 52 and 53 with the cam .surfaces 55 and 56, respectively, the punch- Ving movement of the punch being produced through the direct engagement of the cam 50 with the roll 58, the pivotal bearing of which is formed by the pin 58,7the latter being pivotally connected to the links 59 and 69,-the downward movement oit' said links. Vthrough their connection to the bosses 69 serving to cause a positive downward movement of the punch carrier within the guides 65 and 66. As the lever arm l5 is vpositively connected to the lever arm 44C through the boit -18 it is evident that the action of the cam 5l through the roll 52 will positively lii't the punch carrier for removing the' `punch is made positive and dependable regardless of any variations in speed of the drive shaft.

By reason of the mounting of the bracket member 63 to turn about a vertical axis, it is clear that the punch carrier which is guided within the outer extremity of the horizontal portion 64 of said bracket 63, will have its axis vertical at all times, thus insuring that the cutting edges of the punches shall, in all Y positions of the feeding movement, lie in a plane parallel to the surface 134 of the anvil which receives the blow of the punch. This is a very desirable feature as the punch in descending upon the work will bring all points of its lcutting edge simultaneously into engagement with the work, thus producing a clean and accurate cutting action. This feature is especially desirable where using a punch holder carrying a large number, or cluster, of punches, for if some of such punches are permitted to enter the work first and to strike the anvil member before the others, the result is that some of said punches may cut entirely through the work and paper strip while others thereof may failv to completely remove the chip from the work, a defect which is found to be common in machines in which the axis of the punch carrier, during its feeding movement, is at times inclined to the vertical.

Punch feed.

Projecting outwardly from the rear face of the arm 3 is a bracket 106. Pivoted to turn upon a stud 107, fixed within the bracket 106, is a lever 108, said lever being provided below the stud 107 `with a curved portion 109, having formed therein a T slot 110. Upon the left hand extremity of the shaft 12 (as seen in Fig. 1) is fixed an ec- 'centric 111, said eccentric being provided with an eccentric strap and connecting rod 112 having pivotal'connection atv 113 with the upper extremity of the lever 108,-rotation of the shaft 12 thus serving through eccentric 111 to rock lever 108 about the stud 107. vAt the point 114, in bracket arm 64 and closely adjacent the lower bearing member 66 is formed a lug having mounted therein a stud 115, such stud serving as the pivotal connection fortan adjustable rod 116, the opposite extremity of which is pivotally connected to a bolt 117, the head of which has sliding engagement with the T slot 110 formed in the lower portion of the lever 108. 118 is a locking nut, by means of which said bolt 117, may be adjustably positioned with,-k in the slot 110. c

' From the above construction, it will be evident that upon swinging of the lever 108 the bracket 64 together with the punch carrier and punch will be swung upon the pivot v j points of said bracket 63 as a center, the axis a presser foot 105';

of the punch always lying in avertical plane.l

The above movement ofthe punches about the vertical axis of the bracket 63 servesas a means for feeding the work, the cam 50, immediately following the extreme high portion .55 thereof, which serves to depress the punch being provided with a concentric surface 55a of lesser height which latter surface' serves to slightly relieve the punch after the latter has reached its extreme downward position, thus permitting the punchto movement. Changes in the position of the bolt 117 within the slot thus fail to change in anyV respect the rearward limit of theA punchin its feeding movement, the'adju'stments Yof the length kof stroke being effect-ive only at the .forward 'limit of such movemena-,where such changes are `immaterial so far as the guiding of the work vris concerned. l

Presse/r l foot.

96 is a presser footy bar mounted forsliding movement within a bearing opening 97 formed within the member 11 which projects downwardly from the cover plate 8, said presser-foot bar being normally held in-its depressed position byv a spring 98.` Theup-v per extremity of said presser-foot bar is pro'- vided with a toe 99 (see Fig. 27) adapted to take over a lug 100 formed upon the forward extremity of an arm 1011of a lever 102 pivoted upon the stub shaft 43 adjacent ythe lever 45, said lever 102 being provide'd'with a second arm 103 arranged for `engagement with a cam member 104 fixed upon the shaft- 12 adjacent the cam 51. j from the above construction that upon each rotation of the shaft 12,v the cam 104 will lift the lever member 102, thereby raising the presser-'foot bar 96 against the action of It will be evident j its spring 98, such action ofthe presserfoot being necessary for the proper feedinggof the work. Attached to the lower end of the presser-foot bar, in any suitable The presser foot 105, as Vshown in Figs.. 3 and 5 is provided with a substantially onepoint contact surface at 10521, *such contact;

surface being arranged to rest upon-ftheV work at a point adjacent therearniost limit manner, is U shown in detail in Fig. 29 in which119 indicates the stem portion of the presser foot, and 120 a substantially U-shaped foot' portion, said foot portion comprising a pair of opposed arms 121 extending substantially parallel to the row of perforations formed inthe material. On the under surface of said foot portion Vare formed a pair of arcuate ribs 122 projecting downwardly and serving as the elements by which the presser foot bears upon the material operated upon.

These arcuate ribs form portions of a circle concentric with the conter of the punch when the latter occupies its' extreme rearward position. lVhile as herein shown, these ribs 122 are spaced apart at their rear ends to leave a free opening in line with the direction of feed, it is within the scope of the invention to form the contacting element as a single rib extending from one side ofksaid presser foot continuously around to the other side. Y

In the operation of the machine, theV cam 104 lifts the presser foot against the action of spring -98 during the feed movement of the punch, but at the moment at which the punch' reaches its extreme rearward limit of travel, the presser foot is permitted to drop and rest under tension of the spring 98 upon the material, the punch then being retracted for returning to its initial forward position. VDuring this interval while the punch is being moved to its forward position the work, which is new held downwardly by the presser foot, may be freely turned about the center of curvature of the ribs 122 as an axis, thus permitting the work Y to be properly'positioned for the next punching operation in accordance with the direction of the line of perforations being produced.

4 .justment upon the lower end of a pest 125,

suitably secured in. the lower extremity of the member 11. "As the edge gage and the auxiliary work hold-down present vno features offnovelty over what has been commonly-employed in the prior art, further description of the same is unnecessary'.l lt may be stated, however, that ifdesired, a similar post 125 may be located tothe rear of that herein shown for adjustably securing a secondary auxiliary work hold-,down to the rear of the presser foot.

Punch-bea? or cut/Uil.

The base member 1 is provided at a point near its left hand extremity, as seen in Fig. l, with a slightly raised portion 126, upon which is secured, in any desiree manner, av werlr plate or table 127, this plate being of relatively large area, and the upper surface thereof being suitably finished to permit ready'movement of the material thereover. ln said portion 126 of the base' member is formed an opening 128, said opening serving as a guide wherein is mounted for vertical adjustment a punch bed or anvil 129. 130`is a lever pii-f'oted at vpoint 131upon suitable lugs exten'. into the 4cavity 7 of the base member, the shorter arm 132 of said lever being located directly beneath the opening and serving to support the punch bed .or anvil 129, which is freely slidable within said opening 128. The plate 127 is formed with an opening 133, said opening being of lesser area than that of anvil 129,

the plate'127 thus serving to retain thev anvil in operative position. By the removal of the plate 12'?, the anvil 129 may be readily removed from the guiding opening 128 and replaced by any anvil having its operative surface of a diflerent form, such for instance as is shown in Fig. 14 at 1292K f 'lhe bed plate or anvil members 129, 129a are formed with surfaces at134 adapted to receive the blow of the punch and are pro-V cled-off portions 137, 138, the purpose of which will also be hereinafter stated.

rllhe lever memberv 130, at the extremity opposite from that which supports the anvil, is provided with a longitudinal slot 139. Directly above said slot the bed plate is provided with a screw-threaded opening 140, in which is mounted an adjusting screw 141 having a lrnurled head142, whereby the same may be turned by the hand of the operator. rlhe lower extremity of this screw projects downwardly into the chamber 7 and rests upon the upper surface of lever member 130 bearingthereon upo.. each `side of slot 139. The lower extrer ly' of the crew 141 is provided with 'a threaded opening, with which is engaged an adjusting screw 143, said screw passingY up through -the slot 139 in the lever 130, tiere being interposed between said lever and head of` said screw a compression spring 144,/screw` 143 together with compression spring 144 serving to take up backlash due to wear between the end of the screw 141 and the surface of said lever 130.

ment of the screw 141, the arm 132 of lever 130 may have imparted thereto a vertical adjustment,whereby the height of the anvil 129 may be varied with respect to the lower limit of movement of the punch in its punching operation. Such adjustment of the anvil is desirable in machines of this character, in which a paper strip is used for cushioning the blow of the punch, due to the fact that the paper strips employed vary in thickness at different times, while, owing to the elasticity of the frame parts, the extreme lower limit of the punch in its punching movement may yvary to a slight extent when running at different speeds. Further'- more, the punches employed vary slightly in length as received from the manufacturer, andin adjusting new punches to the machine it is desirable that the surface which receives the blow of the punch should be adjustable to correspond with such variations vin length. By means of the screw 141, which has a relatively low pitch, and by reason of the fact that the anvil rests upon the shorter end ofthe lever 130, a fine or micrometer adjustment of the anvil is secured.

Pape/l' feed.

As above noted, the shaft 12 at its right hand extremity is provided with an eccentric 35, acting upon rotation of the shaft to reciprocate the connecting rod 37; Mounted in suitable bearings provided in the rear portion of the base `member 1, is a rotatable shaft 145,said shaft extending at itsright hand extremity into the chamber 6 in the lower portion of said base member 1. Freely pivoted upon the extremity of said shaft 145 is a lever 146, having the longer arm 147 hereof extending forwardly and slotted as at 148 for the reception of a bolt 149 which may be adjustably secured in said slot by a thuinbinut150. The lower extremity of the connecting rod 37 is pivoted to. turn upon .the bolt 149, whereby rotation of shaft 12,

through eccentric 35', serves to Vproduce a rocking movement of the lever146. By adjustment of the bolt 149 along the slot 148, the extent of the rocking movement of lever 146 about its pivot may bevaried. To the shorter end 151 of the lever 146, at the point 152 is connected a pawl device adapted, through suitable ratchet mechanism fast upon the shaft 145, and indicated generally at 152%, to produce an intermittent rotation of the latter. This pawl and ratchet device l maybe of any known construction, such as shown f or example in patents to Noble, 1,032,621, July 16, 1912 (Figs. 5, 6', v7) or Noble 763,624, June es, 1904C (Figs. 1 and 2) but forms no essential part of the present i invention, and such device has therefore not herein been shown in detail.

rirhe shaft 145, at its left hand extremity, as seen in Fig. 1, has fast thereon a pulley 153. Adjacent said pulley 153 and substantially in alinement with the plane of feed movement of the punch is a roll 154' fast upon said shaft. 155 is a bracket mounted for slight pivotal movement in boss 15.6

formed upon the rearv of base member 1.0

Journaled for yturning movement in said bracket is a shaft 157, said shaft being suitably held within its bearing bracket 155 by collars 158, 159 fixed to said shaft. The shaft 157 normally extends substantially parallel to the shaft 145 and atthe extremity thereof is provided with a roll 160 fixed thereto and adapted tocoperate with the roll 154 of shaft 145.

Adjacent the roll 160, the shaft 157 supported in a bearing member 161, said bearing member being pivotally supported upon the shorter arm 162 of a lever member pivoted upon the base member at v163. longer arm of said lever is .provided atithe point 164 with a downwardly. extending pin arranged to be supported within'the coils of a compressionspring 165 pocketed withinv an opening 166 in the base member 1. The.k

TheV y extremity of said lever member is provided at 167 with a finger piece, whereby said lever may be depressed against the action of said spring, thus servingto lift the shorter arm 162 ofsaid leverl and thereby cause a y separation of the rolls 154 .and 160. rlhe purpose of such separation is to permitof the ready insertion between said rolls of the end of the strip of paper which forms the punch-cushioning means, andvwhich will be hereinafter described. at 167 is a gear meshing' with a gear 168 xedvupon shaft 157, said gears serving to transmit a positive driving motion from Vshaft 145 to shaft 157. 169 indicates a supporting bench or frame, upon which the base member 1 may be secured in any desired manner.

Bolted to the .under side ofl said frame, as by means of bolts 170, isa supporting member or sleeve2171, saidy sleeve having supported for vvertical sliding movementV therein a bracket 172, (see Figs. 1 and y19). The cylindrical portion 173 of said bracket which slides within sleeve 172, is provided at one side thereof with 'a slot 174. 175 is a set screw having threaded engagement .with a suitable Vopening in the slee-ve 171, said set Fixed to shaft 145` screw having a reduced end'portion adapted Jfio-engage within the slot 174 whereby to prevent turning movement of .said `bracket with respect to the sleeve while at the vsame time permitting free vertical adjustment of the bracket with respect to thesleeve. Ro-

tatably mounted within the bracket 172 is a y shaft 176, said shaft having fixed upon its left hand extremity, as seen in Figs. 1 and 19, a pulley 177. The location of the sleeve 171, with respect to the base member 1, is such that the pulley 177 lies in the vertical plane of the pulley 153 on shaft 145, but below the same, an endless band or belt 178 passing around saitv pulleys 153 and 177, whereby the latter may be driven by the rotation of shaft 145. By reason of the free vertical movement of bracket 172 within sleeve 171, it is clear that the weight of said bracket tends to maintain the belt 178 in constant driving tension about the pulleys 153 and 177, thus insuring` at all times a proper driving of the latter. Furthermore, by locating the drive mechanism for the paper feed below the plane of the work plate, the latter' is left entirely free and unobf structed for manipulation of the work by the operator, a feature of considerable advantage in machines of this type.

178 indicates generally a paper-receiving reel or spool, flxedly mounted upon the right hand extremity of shaft 176 and rotatable therewith. The supporting bench 169, as shown in Fig. 1, is provided below the right hand portion of the base member 1 with a bracket 179, said bracket having at 180e downwardly projecting spindle or pivot member, pon which is mounted to turn freely in a horizontal plane,a supporting y or bracket 17911, said supporting arm being;

held in proper relation to said spindleV by means of a collar '180CL fixed upon the lower end of thelatter. The free extremity of the4 supporting` member 17 9a is provided with an upwardly extending pintle 181., upon which is mounted for free turning movement in a horizontal plane, a second paper receiving Vreel or spool 178 The spools 178 and 178a are of identical construction as follows,182 is a hub member havingl a reduced portion 183, and provided with a longitudinally extending journal opening 1841;. is a substantially flat rirculardisk of a diameter effzceeding that of the diameter of the rollof paper commonly supplied to machines of 'this character, said disk being provided with central opening adapted for the reception4 of the reduced portion 183' of hub member 182. 186 a Vsecond disk, of a diameter approximating that of the central openingin the roll of paper employed, and having formed therein arent-ral opening similar to that formed in disk 185, adapted to be slipped upon the reduced portion 183 of` hub 182. The disk 186 as forming a circular series extending around the entire circumference of the disk 186, and designed to engage within the central opening of the roll of paper. While Vas herein shown such fingers are arranged in a circular series, it is within the scope of the invention to provide a lesser number, in some cases two being sufficient for the purpose to be accomplished The upper ends of these fingers may be, if desired, bent inwardly, shown at 188. 189 is a washer having a central opening adapted for the passage of the member 183 of hub 182, andV being further provided with a series of vopenings 190.

ln assembling thel parts above described, the disk 186 is threaded on to the part 183, the portion of larger diameter of hub 182 being locatedrwithin the series of lingers 187 and serving to limit inward movement of the Following the placing of disk 186 upon the hub member, the disk 185 is mounted thereon, followed by the washer 189. Screws, not herein shown, are then inserted in openings 190, and passing through similar openings in disks 1.85 and 186, are arranged to have threaded engagement with suitable openings in the hub 182, whereby the parts are securely held in proper relative position. The spool 178 is mounted upon the shaft 176 to rotate therewith, but to be freely removable therefrom by the following means,- 191 is a collar fixed upon the shaftl17 6 adjacent the end of its bearing in bracket 172, said collar being provided with an outstanding pin 192. The washer 189, disks 185 and 186, and hub 182 are provided. with av series of alined openings, of which that in the hub 182 is indicated at 193q said openings being designed for ventry ofthe pin 192. It will now be seen that by slipping the hub 182 upon the extremity of shaft 176, with the pin 192 located-in the opening 193, the reel 178 will be caused to turn with the shaft 17 6, but may be readily removedv therefrom as occasion may require,1

The .upstanding portion 126 of frame member 1 is provided at its front and rear portions with beveled surfaces'194, 195, said surfaces leading' up to and into the fc:--'" ward and rear portions of the opening 133 formed in the work-supporti'iniP table 127, said beveled portions being in alinement with the beveled portions 137 and 138 of the punch bed or anvil member 129. The beveled portions 194C, 195 and 137 138, together with the upstandingguide elements 135 and 136 of the anvil 129, serve to properly guide the cushioning strip P' over the surface 134 in position for receiving the blow of the punch. Y

The operation of the above parts is briefly as follows. Supporting arm 179a having been swung forward to bring' the pin tle 181 out from beneath the bench 169, and

spool or reel 178a having been placed 'upon strip is then led along beneath the bench to an opening 196 formed in said bench and positioned to guide said strip forkengagement by the beveled surface 194C ot the frame member 1. The end of the strip is led upwardly through this opening, over said bevel surface 19e, over the bevel surface'137 of anvil 129, between guide members 135 and 136 thereof, thence downwardly over beveled surfaces 138 and 195 and between the rolls 154 and 160, the latter having been raised by depression oil the'iinger member 167 of the lever 162.Vv The paper then passes downwardly through a second opening 197 formed in the bench and is passed down to, and secured about, one or more of the finders 187 of reel 178 in any desired manner. rm 179"- is now swung back under the bench carrying reel 17 8a with it. Upon rotation of the shaft 12 of the machine', the shaft 145, through the connections described, is caused to be intermittently rotated, thereby through the rolls 1511l and 160 acting to positively pulloff the paper strip from the reel 17 8a.

Simultaneously with such movement, thel pulley 153, through the belt 178 causes ro-V tation or" the reel 178, thereby windin up the paper strip upon said latter reel. en the paper strip has been entirely wound on reel' 178, the support 17 92L will again be swung forwardly,- the empty reel 17 8a removed thereicrom, and the reel 178, which now contains the entirepaper strip, will be placed upon pintle 181, the reel 17 8a placed upon the shaft 176, the end of the paper drawn from reel 178 and threaded through the machine and connected to reel 178a to be rewound thereon, and the support 17 9a will be swung to its rearward position. v As will be noted from inspection of Figs. l and 18, the same surface of the` paper strip will be'presented to the punch during its second traverse through the machine, but by reason of 'the interchanging of reels,- as above indicated, that edge of the strip which previously moved -inv contact with guide member 136, will now, on its second tra-verse, move in contact with guide 135. t

As the paper strip employed is or" a 'width substantially greater than the width of the group of punches usually used, the indentations caused by the punch in such strip do v not cover the entire surface thereof,- and itis desirable, in order to avoidwaste of paper, to have the strip travel Y more than once through the machine, presenting at each fresh passage thereof new surfaces for engagement by the punch. TheV impressions made in the paper during the first passage of the same through the machine may be caused to occupy the right hand edge of the paper, by reason oi the relative position of' guides 135 and 136 which being unsymmetrical with respect to the plane of traverse 'of the center .of the punch in its feeding AAmovement tend to cause'the center line of paper to pass to the lett vor" saidiplane.

As during the second passage of the paper thereof comes in contact. with the guide l136, the new impressions formed by the punch in the paper occur along the oppositeedge strip through the machine the opposite edge thereof from those lirstl formed, thus securing an economic use of the paper, -while at the same time avoiding overlapping of the impressions which would tend to 'produce an imperfect action of the punch in cutting.

` After the second passage of the paper vthrough the machine, as abeve described, the

reels may be again interchanged, and at the same time an anvil of the form of that shown at 129a (Fig. 13)v lmay be substituted for that shown in Fig. 12.v As will be noted from inspection of Fig. 13, the guides135 and 136i1 are arranged symmetrically with` respect to theV center line of the. anvil and thereby cause the center line of .the paper to travel in the plane of the `center line Vof the punch in its vfeeding movement. "This causes the impressions made bythe vpunch upon the paper, while in the same surface thereof as previously formed, to-be located over-the anvil 129e, yafter which anvil 129 will be substituted, the paper strip in its next two succeeding passages moving over the latter anvil. It is. obvious that if a punch holderk 'employing a large andv complicated group of punchesbe employed the area of the paperstrip -impressed thereby may be such as to'preclude a second or third passage of the paper throughthe machine,

in which case either of the' anvils 129 or 129L may alonebev employed as occasion may direct. They paper ieed mechanismper 'se `is notclaimed in this application, being 'sub-y jee-t matter of applicants application Ser. No. 276,609, tiled February 12, 1919.

predetermined distance of the edge ot such 1j:

material.

The'stopping mechanism herein employed comprises a bracket member 200 (see Fig.

23) secured within the fchamber upon bosses projectingfrom` the ,inner v vall of the latter by means of suitable fastening devices 201, 2,02, or in any other well known Y manner. Pivoted .for swinging movement upon the forward face of said bracket, at

the upper end of a rod 208 extending downthe point 203, is a lever member 204 provided at its upper extremity with a roll 205 arranged to engage within the cam groove 206 in the 4cam sleeve `40. Thev lower extremity of said lever is provided with a cam incline 207, for a purpose to be hereinafter de-y scribed.

209 is a slidable dog, having a shoulder 210, and arranged forvertical sliding movement within a suitable guide opening in the bracket 200, said dog being carried upon wardly to a point below said bracket 200, and provided near its lower extremity with adjustably fixed collar 211. The dog 209 is normally held in upper position by means of a compression spring 212 (see F 30) located within a cavity in the bracket 200,

such dog, when in projected position, pre-v senting its shoulder 210 in the path .of the lower extremity of. lever 204. It will be apparent upon consideration of the above mechanism, that when said dog is in such projected position the lower end of the lever 204 is prevented .from swinging to l by. withdrawing pin 39 from the opening 34 in collar 33 and thus unlocking the shaft 12 from drive shaft-19, (this being the position of Yparts in Fig. 1). 213 is a second cam fixed Ato the sleeve 40 and movable therewith. Such cam may, if desired, be formed integral with sleeve 40 or separate therefrombut fixed thereto. The cam 213 is provided with a raised cam'portion 214 of. gradually increasing height, following which is an abrupt-depression or notch 215,

having a stop shoulder 216 forming one wall thereof. 217 is a stop `dog mounted within a slot 218 in the rear of the bracket 200, said stop dog comprising a suitably formed end ortion for engagement with the cam 214 and notch 215, and having extending downwardly therefrom a tail member 220 mounted for'sliding movement in a suitable opening in pin 221 pivotally mounted'in the side walls of the slot 218.

sion spring 222, said spring bearing upon the lowerv portion of the dog 21.7 at one end, and against the pin 221 at the other end, tending normally to maintain said dog in its uppermost position for engagement with cam 213. The lower extremity of the tail;`

Suri. vrounding said-tail member 220 is a compresto slip past the same.

lock nuts to prevent the dog from being projected entirely out of the pin 221.

The dog 217 is Aresiliently supported against rearward movement about its pivot pin 221 by engagement with a bearing plate 225X carried upon the forward end of a rod- 225, said 4rod passing loosely through a guiding opening 226 formed in a boss projecting from the rear of post 2. Surrounding the pin is a stiff coil spring 228 bearing at one end on plate 225X and having its opposite end seated within a pocket formed in the interior of said outwardly projectinor boss, the rod 225 having a washer 227 mounted thereon exterior of said boss and bearing against the same to limit forward movement of the rod under action of spring 228, said washer being adjustably held in position by means of a nut screwthreaded upon the end of the rod.

lVhen the drive clutch mechanism is in operative position, the dog 217 lies in a plane to the left of the plane of rotation of cam 213, and therefore fails'to contact with the latter. Upon projection, however, of the dog 209 into the path of oscillation of lever 204, the cam sleeve 40, as above described, will be caused to move along the shaft 12 to the left, thereby causing a separation of the pin 39 from the opening 34. Simultaneously with this movement the cam 213 is brought into the path of the dog 217, the timing of the parts being such that the dog 217 will contact initially with the lower portion of 'said cam 213. As said cam continues to revolve, the portion 214 thereof, contacting with the dog 217, tends to depress the latter against the action of spring 222, while at the same time greatly retarding the momentum of the shaft 12 and the parts operated thereby. As the dog 217 reaches the notch 215 it snaps upwardly thereinto, and is brought in contact with the abrupt stop shoulder 216, thus serving to positively stop the rotation of shaft 12.

It has been found in practice, when restarting the machine, that at times the pin 39 fails to become properly seated inf the opening 34, and the edge of the cam 213 is vsometimes caused to strike the dog 217`while positively driven by the drive shaft 19. Under such circumstances a breakage of parts would be likely to occur and to avoid this the dog 217, as has 'herein' been shown, has been resiliently mounted for swinging movement against compression spring 228. With the present construction, if the blow of the shoulder 216 against the dog 217 be of suiicient'intensity, said dog will give slightly in a rearward direction against the action of the spring 228, permitting the cam As the pin 39 will generally properly seat itself before the second rotation` the cam 213 will in most cases member 220 may be PIOVded 313223 Withwnot strike said dog 217 a second time, but 

